You have heard about the positive and negative circles. You have gone through in-with-elbow and out-with-hand thousands of times. You have even advanced and co-ordinated your feet with your hands — hands-in with front foot and hands-out with back foot. Now are you ready for the next step? Co-ordinated rhythmic changes using the basic building blocks of the positive and negative circles… Here is Master Chen Zhonghua in person to demonstrate…
https://www.youtube.com/watch?v=nCuawzZcoek&feature=share